watch Lost free online

87 Available, 91 Aired
Last Aired S06E18 on May 23, 2010
87 episodes available of 91 aired
7.7 (197 Ratings)
45 Min

Lost is an American television series that originally aired on the American Broadcasting Company from September 22, 2004 to May 23, 2010, over six seasons which contained a total of 121 episodes. Lost is a drama series containing elements of science fiction and the supernatural that follows the survivors of the crash of a commercial passenger jet flying between Sydney and Los Angeles, on a mysterious tropical island somewhere in the South Pacific Ocean. The story is told in a heavily serialized manner. Episodes typically feature a primary storyline on the island, as well as a secondary storyline from another point in a character's life.

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All Lost (2004) Episodes

Lost Seasons

  1. Watch Lost Season 6 S06
    13 of 15 Ep. Available 2010
  2. 17 of 17 Ep. Available 2009
  3. 13 of 13 Ep. Available 2008
  4. 20 of 22 Ep. Available 2005
  5. 24 of 24 Ep. Available 2004

Lost Episodes

  1. 18 Watch Lost S06E18 online - The End (2)
    Not Available Aired on May 23, 2010
  2. 17
    Available Aired on May 23, 2010
  3. 16
    Available Aired on May 18, 2010
  4. 15
    Available Aired on May 11, 2010
  5. 14
    Available Aired on May 04, 2010
  6. 12
    Available Aired on Apr 13, 2010
  7. 11
    Available Aired on Apr 06, 2010
  8. 10
    Available Aired on Mar 30, 2010
  9. 9
    Available Aired on Mar 23, 2010
  10. 8
    Available Aired on Mar 16, 2010
  11. 7
    Available Aired on Mar 09, 2010
  12. 6
    Available Aired on Mar 02, 2010
  13. 5
    Available Aired on Feb 23, 2010
  14. 2
    Not Available Aired on Feb 02, 2010
  15. 1
    Available Aired on Feb 02, 2010
  1. 17
    Available Aired on May 13, 2009
  2. 16
    Available Aired on May 13, 2009
  3. 15
    Available Aired on May 06, 2009
  4. 14
    Available Aired on Apr 29, 2009
  5. 13
    Available Aired on Apr 15, 2009
  6. 12
    Available Aired on Apr 08, 2009
  7. 11
    Available Aired on Apr 01, 2009
  8. 10
    Available Aired on Mar 25, 2009
  9. 9
    Available Aired on Mar 18, 2009
  10. 8
    Available Aired on Mar 04, 2009
  11. 7
    Available Aired on Feb 25, 2009
  12. 6
    Available Aired on Feb 18, 2009
  13. 5
    Available Aired on Feb 11, 2009
  14. 4
    Available Aired on Feb 04, 2009
  15. 3
    Available Aired on Jan 28, 2009
  16. 2
    Available Aired on Jan 21, 2009
  17. 1
    Available Aired on Jan 21, 2009
  1. 14
    Available Aired on May 29, 2008
  2. 13
    Available Aired on May 29, 2008
  3. 12
    Available Aired on May 15, 2008
  4. 11
    Available Aired on May 08, 2008
  5. 10
    Available Aired on May 01, 2008
  6. 8
    Available Aired on Mar 20, 2008
  7. 7
    Available Aired on Mar 13, 2008
  8. 6
    Available Aired on Mar 06, 2008
  9. 5
    Available Aired on Feb 28, 2008
  10. 4
    Available Aired on Feb 21, 2008
  11. 3
    Available Aired on Feb 14, 2008
  12. 2
    Available Aired on Feb 07, 2008
  13. 1
    Available Aired on Jan 31, 2008
  1. 24
    Not Available Aired on May 24, 2006
  2. 23
    Available Aired on May 24, 2006
  3. 22
    Available Aired on May 17, 2006
  4. 21
    Available Aired on May 10, 2006
  5. 20
    Available Aired on May 03, 2006
  6. 19
    Available Aired on Apr 12, 2006
  7. 18
    Available Aired on Apr 05, 2006
  8. 17
    Available Aired on Mar 29, 2006
  9. 16
    Available Aired on Mar 22, 2006
  10. 15
    Available Aired on Mar 01, 2006
  11. 14
    Available Aired on Feb 15, 2006
  12. 13
    Available Aired on Feb 08, 2006
  13. 12
    Available Aired on Jan 25, 2006
  14. 10
    Not Available Aired on Jan 11, 2006
  15. 9
    Available Aired on Nov 30, 2005
  16. 8
    Available Aired on Nov 23, 2005
  17. 6
    Available Aired on Nov 09, 2005
  18. 5
    Available Aired on Oct 19, 2005
  19. 4
    Available Aired on Oct 12, 2005
  20. 3
    Available Aired on Oct 05, 2005
  21. 2
    Available Aired on Sep 28, 2005
  22. 1
    Available Aired on Sep 21, 2005
  1. 24
    Available Aired on May 25, 2005
  2. 23
    Available Aired on May 18, 2005
  3. 22
    Available Aired on May 11, 2005
  4. 21
    Available Aired on May 04, 2005
  5. 20
    Available Aired on Apr 06, 2005
  6. 19
    Available Aired on Mar 30, 2005
  7. 18
    Available Aired on Mar 02, 2005
  8. 17
    Available Aired on Feb 23, 2005
  9. 16
    Available Aired on Feb 16, 2005
  10. 15
    Available Aired on Feb 09, 2005
  11. 14
    Available Aired on Jan 19, 2005
  12. 13
    Available Aired on Jan 12, 2005
  13. 12
    Available Aired on Jan 05, 2005
  14. 11
    Available Aired on Dec 08, 2004
  15. 10
    Available Aired on Dec 01, 2004
  16. 9
    Available Aired on Nov 17, 2004
  17. 8
    Available Aired on Nov 10, 2004
  18. 7
    Available Aired on Nov 03, 2004
  19. 6
    Available Aired on Oct 27, 2004
  20. 5
    Available Aired on Oct 20, 2004
  21. 4
    Available Aired on Oct 13, 2004
  22. 3
    Available Aired on Oct 06, 2004
  23. 2
    Available Aired on Sep 29, 2004
  24. 1
    Available Aired on Sep 22, 2004

Watch Lost season 6 episode 18 (S06E18)

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The Man in Black's final fate is determined, and one survivor must make the ultimate sacrifice to save the island. Meanwhile, in another life, the ones who might have been the survivors gather for a final time.

Watch Lost season 6 episode 17 (S06E17)

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Jack, the new protector of the island, meets with Locke and they go past the bamboo field with Desmond to visit the heart of the island. The Man in Black's final fate is determined, and one survivor must make the ultimate sacrifice to save the island. Meanwhile, in another life, the ones who might have been the survivors gather for a final time.

Watch Lost season 6 episode 16 (S06E16)

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While Locke devises a new strategy, Jack's group searches for Desmond.

Watch Lost season 6 episode 15 (S06E15)

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The motives of John Locke are finally explained.

Watch Lost season 6 episode 14 (S06E14)

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After the remaining survivors are reunited, Sawyer and Jack hatch a plan to divert the Man in Black's attention and leave the island without him on Widmore's submarine, but disastrous consequences await them. In the flash sideways, Jack investigates the cause of Locke's paralysis and offers treatment.

Watch Lost season 6 episode 12 (S06E12)

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Hurley worries about what the group should do next and Locke is curious about the new arrival in his camp.

Watch Lost season 6 episode 11 (S06E11)

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Desmond wakes up to discover he's back on the island.

Watch Lost season 6 episode 10 (S06E10)

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Sun and Jin desperately continue their search for one another, and Locke confronts his enemy.

Watch Lost season 6 episode 9 (S06E09)

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Richard Alpert faces a difficult choice.

Watch Lost season 6 episode 8 (S06E08)

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Locke tasks Sawyer with a mission.

Watch Lost season 6 episode 7 (S06E07)

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Ben deals with the consequences of an uncovered lie.

Watch Lost season 6 episode 6 (S06E06)

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Sayid is faced with a difficult decision, and Claire sends a warning to the temple inhabitants.

Watch Lost season 6 episode 5 (S06E05)

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Hurley must convince Jack to accompany him on an unspecified mission, and Jin stumbles across an old friend.

Watch Lost season 6 episode 2 (S06E02)

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Jack, Sawyer, Kate, Miles and Hurley, struggling to save Sayid, face an ancient secret. Meanwhile, a fake Lock exits the chamber to everyone's awe.

Watch Lost season 6 episode 1 (S06E01)

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A parallel universe, in which the crash never happened, is revealed as an aftermath of the bomb's detonation. Meanwhile, Sawyer blames Jack for the loss of Juliet and the true identity of the monster is revealed.

Watch Lost season 5 episode 17 (S05E17)

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Jack's decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke assigns Ben a difficult task.

Watch Lost season 5 episode 16 (S05E16)

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Jack's decision to put a plan in action in order to set things right on the island is met with some strong resistance by those close to him, and Locke assigns Ben a difficult task.

Watch Lost season 5 episode 15 (S05E15)

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Jack and Kate find themselves at odds over the direction to take to save their fellow island survivors, Locke further solidifies his stance as leader of "The Others," and Sawyer and Juliet come under scrutiny from the Dharma Initiative.

Watch Lost season 5 episode 14 (S05E14)

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On the 100th episode milestone for the series, the time of reckoning has begun when Daniel Faraday comes clean regarding what he knows about the island.

Watch Lost season 5 episode 13 (S05E13)

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Suspicions about a possible breach intensify after Ben is taken from the infirmary, and a reluctant Miles is forced to work with Hurley when he's asked to deliver an important package to a top Dharma official.

Watch Lost season 5 episode 12 (S05E12)

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To atone for sins of the past, Ben must attempt to summon the smoke monster in order to be judged.

Watch Lost season 5 episode 11 (S05E11)

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Kate goes to extreme measures to save Ben's life when Jack refuses to help. Meanwhile, Kate begins to tell the truth about the lie in order to protect Aaron.

Watch Lost season 5 episode 10 (S05E10)

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Everyone on the island is at risk when one of the survivors decides to go against them and taking matters into their own hands.

Watch Lost season 5 episode 9 (S05E09)

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After meeting old acquaintances Sawyer is forced to continue lying to protect them.

Watch Lost season 5 episode 8 (S05E08)

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Sawyer perpetuates a lie with some of the other island survivors in order to protect themselves from mistakes of the past.

Watch Lost season 5 episode 7 (S05E07)

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Locke's mission off the island as Jeremy is revealed.

Watch Lost season 5 episode 6 (S05E06)

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The members of Oceanic 6 discover how to get back to the island, but not all of them want to return.

Watch Lost season 5 episode 5 (S05E05)

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Locke shoulders the burden of ending the island's increasingly violent movements through time; Ben is stymied in his efforts to reunite the Oceanic 6 and bring them back to the island.

Watch Lost season 5 episode 4 (S05E04)

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Kate discovers that someone knows the secret of Aaron's true parental lineage. Meanwhile, the dramatic shifts through time are placing the lives of the remaining island survivors in extreme peril.

Watch Lost season 5 episode 3 (S05E03)

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Desmond looks for a woman who might be the key to helping Faraday stop the island's unpredictable movements through time; Locke finds out who has been attacking the survivors.

Watch Lost season 5 episode 2 (S05E02)

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Hurley and Sayid are on the run from the cops after stumbling into trouble at the safehouse; the island survivors come under attack by unknown forces; and an old friend offers some shocking advice to Kate in order to ensure that "the lie" remain a secret.

Watch Lost season 5 episode 1 (S05E01)

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The remaining island survivors start to feel the effects of the aftermath of moving the island, and Jack and Ben begin their quest to reunite the Oceanic 6 in order to return to the island with Locke's body in an attempt to save their former fellow castaways.

Watch Lost season 4 episode 14 (S04E14)

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As the face-off between the survivors and the freighter people continues, the Oceanic Six find themselves closer to rescue.

Watch Lost season 4 episode 13 (S04E13)

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The face-off between the survivors and the freighter people continues, and the Oceanic Six find themselves closer to rescue.

Watch Lost season 4 episode 12 (S04E12)

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Sayid goes back to the island to bring the rest of the people to the freighter. Ben, Locke, and Hurley go to another Dharma station in order to "move the island".

Watch Lost season 4 episode 11 (S04E11)

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Locke finds out where Jacob's cabin is. Life on the freighter becomes dangerous.

Watch Lost season 4 episode 10 (S04E10)

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Kate and Juliet must learn to work together when Jack's health is seriously compromised, and something goes wrong as Sawyer, Claire, Aaron and Miles continue their trek away from Locke's camp and back to the beach

Watch Lost season 4 episode 8 (S04E08)

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Sayid confronts Ben's spy on the freighter, and Ben urges daughter Alex to flee Locke's camp in order to survive an impending attack.

Watch Lost season 4 episode 7 (S04E07)

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Juliet is forced to reveal some startling news to Jin when Sun threatens to move to Locke's camp. Meanwhile, Sayid and Desmond begin to get an idea of the freighter's crew when they meet the ship's captain.

Watch Lost season 4 episode 6 (S04E06)

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Juliet receives an unwelcome visit from someone from her past and is given orders to track down Charlotte and Faraday in order to stop them from completing their mission -- by any means necessary. Meanwhile, Ben offers Locke an enticing deal.

Watch Lost season 4 episode 5 (S04E05)

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Sayid and Desmond hit a bit of turbulence on the way to the freighter, which causes Desmond to experience some unexpected side effects.

Watch Lost season 4 episode 4 (S04E04)

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Kate needs to get information out of the hostages, but it may jeopardize her standing with Locke -- as well as with Sawyer. Meanwhile in the future Kate's Court hearings take place.

Watch Lost season 4 episode 3 (S04E03)

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Locke's hostage may be the key to getting off the island, so Sayid and Kate go in search of their fellow castaway in an attempt to negotiate a peaceful deal.

Watch Lost season 4 episode 2 (S04E02)

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The survivors begin to question the intentions of their supposed rescuers when four strangers arrive on the island.

Watch Lost season 4 episode 1 (S04E01)

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They thought they had met the enemy. They thought they had seen evil. They thought wrong. As the new season begins, the survivors feel that rescue is close at hand, but they don't know whether or not to believe Charlie's final message that the people claiming to liberate them are not who they seem to be. As unlikely alliances are formed, those they thought could be trusted may turn against them, as the enemy of their enemy becomes their friend. But who can be trusted? Is rescue really as close as it seems?

Watch Lost season 2 episode 24 (S02E24)

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After discovering something odd just offshore, Jack and Sayid come up with a plan to confront "The Others" and hopefully get Walt back. Meanwhile, Eko and Locke come to blows as Locke makes a potentially cataclysmic decision regarding the "button" and the hatch.

Watch Lost season 2 episode 23 (S02E23)

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After discovering something odd just offshore, Jack and Sayid come up with a plan to confront "The Others" and hopefully get Walt back. At the same time there will be an answer to the question of where Michael has been and resolution of him and Walt. Meanwhile, Eko and Locke come to blows as Locke makes a potentially cataclysmic decision regarding the "button" and the hatch. Lastly, Desmond returns and he sheds some more light on his experience on the island in the three years prior to when Locke came down into that hatch.

Watch Lost season 2 episode 22 (S02E22)

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A determined Michael convinces Jack and several castaways to help him rescue Walt from "The Others." With Jack away, Locke is left in charge of the hatch and must decide if he should believe Henry and not push the button, risking everyone's safety. Meanwhile, the events that happened to Michael after he left are finally revealed. Meanwhile, Charlie struggles with Eko's decision to discontinue building the church.

Watch Lost season 2 episode 21 (S02E21)

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Mr. Eko has dreams about his brother leading him somewhere. He seeks Locke's help in finding a secret location, the "question mark." Meanwhile, Jack and the other survivors grapple with the horrific situation in the hatch with the death of Ana-Lucia and Libby clinging to life.

Watch Lost season 2 episode 20 (S02E20)

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After finding an exhausted Michael in the forest, Jack and Kate bring him back to the main camp. When he finally wakes up, Michael has some new details about "The Others." Also, a lovestruck Hurley plans a date for Libby.

Watch Lost season 2 episode 19 (S02E19)

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Rose is surprisingly and vehemently opposed to Bernard's plan to create an S.O.S. signal; romantic sparks are rekindled between Jack and Kate when they trek into the jungle to propose a "trade" with "The Others"; and Locke begins to question his faith in the island.

Watch Lost season 2 episode 18 (S02E18)

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Libby lends a helping hand to Hurley to support him when he begins to think the island is having a strange effect on him. Hurley begins to see Dave (guest-star Evan Handler, Sex and the City) on the island, who was his friend in the mental institution Hurley was in. Also, Locke's sense of purpose is shaken when the prisoner gives him new information about the hatch.

Watch Lost season 2 episode 17 (S02E17)

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When the hatch suddenly takes on a life of its own, Locke is forced to enlist the help of an unlikely ally to control the matter. Meanwhile, Ana Lucia, Sayid and Charlie go off into the jungle to find out the truth about Henry Gale and see if there really is balloon craft out there in the jungle that carried him and his wife to the island.

Watch Lost season 2 episode 16 (S02E16)

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Sun comes to the realization that she might be pregnant. She struggles on whether to tell Jin about the situation. Meanwhile, with no success from Jack or Sayid, Ana-Lucia is called in by Locke to interrogate the new prisoner Henry Gale to get more information out of him about the balloon that he and his wife supposedly landed on the island with.

Watch Lost season 2 episode 15 (S02E15)

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A mysterious illness that baby Aaron suddenly contracts sends a desperate Claire, Kate and French woman Danielle to return to the same area where Claire was initially kidnapped. It is there where she believes she can find a cure for Aaron's illness. In the meantime, Jack and Locke are doing their best to keep their prisoner a secret from the rest of the survivors on the island.

Watch Lost season 2 episode 14 (S02E14)

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After Sun is attacked, some of the survivors begin to think that one of the "other survivors" might be one of "The Others." When French woman Danielle Rousseau leads Sayid to a mysterious captive in the jungle, he becomes determined to find out if he is one of "The Others". Meanwhile, Sawyer discovers Hurley’s potentially devastating breach of the survivors’ trust and blackmails him into helping track an elusive island creature that won’t leave Sawyer alone.

Watch Lost season 2 episode 13 (S02E13)

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Some of the island survivors fear that "The Others" may have returned when Sun is greatly injured during a failed kidnapping attempt at her plant garden. Also, the trust barrier becomes very thin between Locke and Jack in terms of locking up the guns and being kept safe. Meanwhile, Sawyer is an amused but highly interested bystander when tension escalates between Jack, Locke, Kate and Ana Lucia. When Jack purposely takes Sawyer's medication from him he pushes more in favor of helping Locke. Lastly, flashbacks reveal more of Sawyer's con artist past.

Watch Lost season 2 episode 12 (S02E12)

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When Charlie's vividly surreal dreams lead him to believe Claire's baby, Aaron, is in danger, Locke suspects Charlie may be using again. Meanwhile, Sawyer encourages Hurley to act on his attraction to Libby.

Watch Lost season 2 episode 10 (S02E10)

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This episode will shed more light on why Eko took a mysterious 40-day vow of silence, and possibly information on his stick. Also, Claire begins to lose faith in Charlie after Eko begins to question him about the Virgin Mary statue, and Kate gives the recovering Sawyer a much-needed haircut.

Watch Lost season 2 episode 9 (S02E09)

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As Kate’s backstory continues, her original crime is revealed. She thinks something is haunting her through Sawyer. Locke and Eko make an interesting discovery about the film, and Michael has a mysterious encounter with the computer.

Watch Lost season 2 episode 8 (S02E08)

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Violence erupts when Ana Lucia and her group stumble upon Sayid and the other castaways on the island. Ana Lucia holds Sayid captive. Kate and Jack care for Sawyer when Mr. Eko brings him back to the camp himself. Flashbacks reveal Ana Lucia's troubled life as a cop.

Watch Lost season 2 episode 6 (S02E06)

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Sawyer's wound becomes life-threatening as he, Michael and Jin make their way through the interior of the island with the tail section survivors. Meanwhile, Shannon is once again haunted by visions of Walt.

Watch Lost season 2 episode 5 (S02E05)

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Michael sets off into the jungle by himself determined to find Walt, but discovers that he is not alone. Meanwhile, Sawyer and Jin are ordered by their captors to take them to their camp, and Sun frantically searches for her missing wedding ring. In flashbacks this episode reveals more of Jin's life before ending up on the island.

Watch Lost season 2 episode 4 (S02E04)

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Hurley struggles with an assigned task inside the hatch as he flashbacks to disturbing memories in his life before the crash. Meanwhile, Sawyer, Michael and Jin learn the identities of their captors on the island. Claire uncovers a startling piece of information about the fate of the raft.

Watch Lost season 2 episode 3 (S02E03)

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Jack, Locke and Kate learn more secrets about the hatch. Meanwhile, after being beaten and taken captive, Sawyer, Michael and Jin wonder if their captors are fellow survivors or the dreaded "Others." Flashbacks reveals more of Locke's past in this episode as well as the introduction of Helen (guest star Katey Segal) who shakes things up even more with her revealing personality and past.

Watch Lost season 2 episode 2 (S02E02)

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With the abduction of Walt fresh on their minds, their raft destroyed, and Jin missing, Michael and Sawyer fight for their lives in the middle of nowhere in the ocean and discover a new predator in the roiling sea. Meanwhile on land, Locke must descend into the hatch when Kate goes missing inside. Also, Jack isn't too far behind Locke as he decides to go into the hatch as well later on. Lastly, flashbacks reveal more of Michael's troubled relationship with ex-lover Susan and their baby son Walt as they fight over custody for Walt and Michael must let go.

Watch Lost season 2 episode 1 (S02E01)

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Jack, Locke and Kate explore the mysterious hatch but Jack decides to wait before going down into the hatch. Kate and Locke aren't so patient. When Shannon chases after Vincent the dog, she encounters a familiar face in the jungle.

Watch Lost season 1 episode 24 (S01E24)

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The castaways on the raft run into unexpected trouble. Meanwhile, the remaining islanders attempt to blow open the hatch. Flashbacks continue to show the survivor's final moments before boarding their fateful flight.

Watch Lost season 1 episode 23 (S01E23)

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The French woman-Danielle Rousseau-shocks the survivors by showing up to the camp with a dire warning about "the Others" who are on the island, and the black smoke that precedes them. Meanwhile, Michael and Jin ready the raft for sailing. In flashbacks, we see the survivors final moments before they boarded their fateful flight.

Watch Lost season 1 episode 22 (S01E22)

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Jack suspects foul play when Michael becomes violently ill while building the raft. The suspects include Sawyer and Kate, who compete for the last seat on the raft and do anything possible to prevent each other from getting it. Meanwhile, a secret from Kate's past is revealed to the other survivors on the island.

Watch Lost season 1 episode 21 (S01E21)

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After another funeral, tempers rise as the survivors' suspicions of each other grow, and an unlikely survivor vows revenge. The events that landed Sayid on Flight 815 play out as he engages Locke in a psychological game of cat and mouse to uncover the truth about the mishap that claimed Boone's life.

Watch Lost season 1 episode 20 (S01E20)

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Jack tends to a severely wounded Boone after Locke returns him to the caves. In the confusion, Locke slips away to deal with his guilt over the crisis. Meanwhile, Claire unexpectedly goes into labor while deep in the forest.

Watch Lost season 1 episode 19 (S01E19)

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Locke thinks he's being sent a sign on how to get the hatch open, and he and Boone venture inland. Jack is reluctant to offer assistance when Sawyer begins to experience excruciating headaches and needs glasses.

Watch Lost season 1 episode 18 (S01E18)

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When Hurley becomes obsessed with the French woman and heads into the jungle to find her, Jack, Sayid and Charlie have no choice but to follow. Hurley flashes back to the hugely life-altering experience he had before boarding the plane.

Watch Lost season 1 episode 17 (S01E17)

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When the raft the survivors have been building mysteriously burns down, Michael is convinced that Jin is responsible for the sabotage, which only serves to escalate their rivalry. Meanwhile, Sun stuns her fellow survivors with a surprising revelation, and Boone gives Sayid a warning about his step-sister Shannon. Lastly, more details of Jin and Sun's troubled marriage are revealed through flashbacks.

Watch Lost season 1 episode 16 (S01E16)

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Kate and Sawyer divulge dark secrets to each other while tracking a renegade boar that Sawyer swears is purposely harassing him. Hurley and Sayid worry that Charlie is losing it after facing a brush with death and killing Ethan with 6 bullets to the chest. A shocking prior connection between Sawyer and Jack is revealed in a flashback which shows Sawyer meeting Jack's father in a bar. Robert Patrick ("Terminator 2: Judgment Day," "The X-File") guest stars.

Watch Lost season 1 episode 15 (S01E15)

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After the missing Claire returns with no recollection of what has happened since before she boarded the doomed Oceanic flight 815, Jack and Locke formulate a plan of defense against her kidnapper, the mysterious Ethan (guest-star William Mapother), who threatens to kill off the other survivors one by one unless Claire is returned to him. Meanwhile, the disappointment Charlie feels when Claire does not remember him triggers recollections of a woman he had let down in the past.

Watch Lost season 1 episode 14 (S01E14)

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Violence ensues and a mysterious island beast makes a re-appearance when Michael and Locke clash over Walt's upbringing. Meanwhile, Charlie is tempted to read the missing Claire's diary, and Sayid enlists Shannon to help decipher the French woman's map.

Watch Lost season 1 episode 13 (S01E13)

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When Locke learns that Boone wants to share their "secret" with Shannon, Locke decides to teach him a lesson. This leads to Shannon's life being placed in what seems like peril. Boone and Shannon's dark past is revealed in a shocking backstory that recalls their relationship right before the plane crash and presages the return of the beast. Kate, who has become a confidante to the soft-spoken Sun, is puzzled by Sun's mysterious behavior and the revelation that she can speak English. A hungry Hurley must convince Jin to share his fish by making up for offending Jin by rejecting his offer of raw fish early on, or he'll continue to suffer digestive problems from the limited island diet.

Watch Lost season 1 episode 12 (S01E12)

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Jack, Kate and Sawyer fight over possession of a newly discovered locked metal briefcase which might contain insights into Kate's mysterious past. Meanwhile, Sayid asks a reluctant Shannon to translate notes he took from the French woman. A rising tide threatens to engulf the fuselage and the entire beach encampment, and Rose and a grieving Charlie tentatively bond over Claire's baffling kidnapping.

Watch Lost season 1 episode 11 (S01E11)

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Survivors wonder why Charlie and Claire have been abducted - and by whom - and a search party ventures into the treacherous jungle to look for the pair. Suspicions focus on Ethan Rom (guest-star William Mapother), who, it was recently discovered, was not a passenger on the doomed flight. Jack battles inner demons relating to his father, while Boone and Locke discover another island mystery.

Watch Lost season 1 episode 10 (S01E10)

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Claire has a horribly realistic nightmare about her new baby being harmed or kidnapped. Flashbacks reveal Claire's backstory: the former boyfriend who got her pregnant, then abandoned her, and the psychic who convinced her to take the ill-fated flight that landed her on the island. Hurley is shocked and confused when he discovers that Ethan Rom (guest-star William Mapother), another plane crash survivor, does not appear on the flight manifest.

Watch Lost season 1 episode 9 (S01E09)

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Sayid's life is placed in grave danger after he stumbles upon the source of the mysterious French transmission, the woman Danielle Rousseau (guest-star Mira Furlan). She was on the distress call and is found alive. Meanwhile, Hurley has a ridiculous plan to make life on the island a little more civilized. The plan involves golf clubs he finds in the debris, and it looks like it just might work. Lastly, we flash back to Sayid's childhood friend Nadia as well as his participation in hostage situations in Iraq.

Watch Lost season 1 episode 8 (S01E08)

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Shannon's inhaler runs out and Boone believes Sawyer has the remaining three in his stash. When Sawyer refuses to give them up, Jack and Sayid resort to torturing Sawyer until he agrees to reveal the location of the inhalers. In flashback we hear Sawyer's story and find he is not who he says he is.

Watch Lost season 1 episode 7 (S01E07)

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Charlie begins a painful journey of withdrawal from drugs, surprisingly aided by Locke, whose true motive for helping Charlie is a mystery. Meanwhile, survivors struggle to find and free Jack when he's buried alive in a cave collapse, and someone might be secretly thwarting Sayid, Kate, and Boone when they enact a plan to find the source of the French transmission.

Watch Lost season 1 episode 6 (S01E06)

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Walt and the others are shocked when Michael is brutally beaten, but only the non-English-speaking Jin and Sun know the truth behind the attack. Meanwhile Kate, Jack, Sawyer and Sayid argue about where the survivors should camp -- on the beach, where they're more likely to be seen, or in a remote inland valley where fresh water abounds; and Locke discovers Charlie's secret.

Watch Lost season 1 episode 5 (S01E05)

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Jack is nearly delirious from lack of sleep and struggles to overcome the haunting events that brought him to Australia and, subsequently, to the island. Meanwhile, Boone gets caught in a treacherous riptide trying to save a woman who went out swimming. A pregnant Claire's health takes a bad turn from lack of fluids, and a thief may have stolen the last bottles of water. Veronica Hamel guest-stars as Jack's mother, Margo. Also, Jack flashes back at 12 years old, to find himself on the playground in an altercation with a bully, who ultimately beats him up, and later learns a life lesson from his father.

Watch Lost season 1 episode 4 (S01E04)

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The survivors are jolted awake in the middle of the night when wild island beasts (which are wild boars) invade the beach encampment. Kate and Michael join the mysterious Locke on a hunt for food -- and a shocking secret about Locke is revealed. On the hunt for food someone is injured. Meanwhile, some survivors are horrified by Jack's plan for the dead bodies still scattered among the wreckage -- he wants to burn them. Jack sees someone that's not there, and we find out that one of the survivors was not able to walk but now he can.

Watch Lost season 1 episode 3 (S01E03)

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Jack and Hurley discover an alarming secret about Kate, as the marshal's life hangs in the balance and he suffers a lot of pain. Meanwhile Kate, Charlie, Sawyer, Sayid, Boone and Shannon ponder the mysteries they have begun to uncover and worry that telling the other survivors will cause panic. They decide to lie for the time being. Also, Locke's befriending of Walt disturbs Michael, but Walt is more concerned in finding his dog. Lastly, Kate flashes back to when she was arrested by the marshal in Australia.

Watch Lost season 1 episode 2 (S01E02)

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Having escaped the "creature" and retrieved the plane transceiver, a group of the survivors travel to higher ground so they can transmit a signal. En route, they receive a mysterious transmission and encounter another of the island's inhabitants. Meanwhile, back at camp, Jack tends to a wounded man who reveals a secret about Kate.

Watch Lost season 1 episode 1 (S01E01)

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Stripped of everything, the 48 survivors scavenge what they can from the plane for their survival. Some panic. Some pin their hopes on rescue. A few find inner strength they never knew they had-like Kate who, with no medical training, suddenly finds herself suturing the doctor's wounds. The band of friends, family, enemies and strangers must work together against the cruel weather and harsh terrain. But the intense howls of mysterious creatures stalking the jungle fill them all with fear. Fortunately, thanks to the calm leadership of quick-thinking Jack and level-headed Kate, they have hope. But even heroes have secrets, as the survivors will come to learn.

Watch Lost (2004) show trailer

How to watch Lost online without downloading

  1. Watch Lost online only at TVRill for free. No download or registration required.
  2. Lost first started airing on Sep 22, 2004 and we have updated 87 out of 91 aired episodes and we will add more as they air.
  3. Please note that new Lost episodes can take upto 2 days to be updated after their first airing date.
  4. To watch Lost episodes, select the season and episodes from the list above and the proper episode information will appear on the right side (or below in case of mobile devices), click on the watch now button below the episode info to go to episode page, and watch the respective episode without downloading.

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